S
M
T
W
T
F
S
30
77°
59°
31
79°
56°
1
80°
55°
2
76°
54°
3
75°
57°
4
79°
63°
5
82°
61°
6
81°
54°
7
79°
55°
8
75°
54°
9
78°
60°
10
79°
57°
11
77°
59°
12
75°
59°
13
74°
54°
14
73°
51°
15
71°
50°
16
71°
51°
17
72°
57°
18
76°
57°
19
79°
58°
20
80°
57°
21
77°
50°
22
76°
55°
23
70°
49°
24
77°
48°
25
69°
47°
26
68°
51°
27
75°
54°
28
68°
55°
29
75°
54°
30
Hist. Avg.
71°
48°
1
Hist. Avg.
71°
48°
2
Hist. Avg.
70°
47°
3
Hist. Avg.
70°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Oak Harbor
Oak Harbor's September 2026 forecast shows daily high temperatures ranging from 68° to 82°, with overnight lows between 47° and 63°. The average high for September is 76° with an average low of 55°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Oak Harbor. See also: October | November | December.
